Cyanophenyl-azo-aminophenyl dyestuffs

Abstract

Dyestuffs of the formula ##STR1## wherein B denotes (CH.sub.2).sub.n --R.sub.1 or alkenyl, R.sub.1 denotes hydrogen, cyano, carbalkoxy, alkoxy or phenyl, R.sub.2 denotes hydrogen, cyano, alkoxy or sulphato, R.sub.3 denotes hydrogen, alkyl, alkoxy, alkylcarbonylamino or sulphatoalkylcarbonylamino, R.sub.4 denotes hydrogen, alkyl or alkoxy, V.sub.1 denotes hydrogen, chlorine, bromine or cyano, V.sub.2 denotes hydrogen, chlorine, bromine, cyano, alkyl, trifluoromethyl, methylsulphonyl or ethylsulphonyl, V.sub.3 denotes hydrogen, chlorine or alkyl, A denotes --(CH.sub.2).sub.n -- or --(CH.sub.2).sub.n --O--(CH.sub.2).sub.n -- and n denotes an integer from 1 to 4 And wherein Either R.sub.2 must denote a sulphato radical or R.sub.3 must denote a sulphatoalkylcarbonylamino radical, Are suitable for the dyeing of natural and synthetic fibre materials containing amide groups.

Dependencies are inferred from the claim text.